Lock.



H. G. VOIGHT & G. B. PICKOP.

LOCK.

APPLICATION FILED DEc.'15. |914.

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LOCK.

. APPLICATION .15, 1914. 1,262,287. Patented Apr. 9,1918.

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LOCK.

APPLlcATloN FILED nEc. l5, |914.

Patented Apr. 9,1918.

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IVTNESSES:

H. G. volGHT a; s. B. PICKUP.

l LOCK.

APPLICATION FILED DEC. l5. 1914.-

1,252,237, Patented Apr.9,'191&

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iiin s'iiains rA'inni orrion. L

HENRY G. VOIGI-IT, OF NEW BRITAIN, AND GEORGE B. PICKOP, vOIE NEW HAVEN,

CONNECTICUT, ASSIGNORS TO SARGENT & COMPANY, OFVNET` HAVEN, CON- NECTICUT, A CORPORATION F CONNECTICUT.

LOCK.

Specication of Letters Patent.

Application filed December 1v5, 1914. SerialiNo 877,375.

T0 all lwhom t may Concern.'

Be it; known that we, HENRYV G. VoiGH'i and GEORGE B. Pioror, citizens of the United States, residing, respectively, in New Britain, Hartford county, and New Haven, New Haven county, Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention. relates to locks, and more particularly. to corridor door locks of hotels and similar buildings, although the invention applicable to locks of other types.

For hotel use a lock is required which can be opened at all times, and under all circumstances, by means of a special key known as an emergency key, which is usually kept in the possession of the proprietor or manager. lvloreover, in addition to the ordinary guest keys, or change keys, the locks of a'hotel, or like buildingg'may usually be operated by a master (maids) key, a grandmaster key, and sometimes by a display key, the functions of which are well understood in the art. Usually all of these various keys act on a single'group of tumblers, e. g., a series of pivoted tumblers, or a series of pin tumblers in a cylinder lock, and therefore the lock structure is more and more complicated as the number of functions of the'lockris increased, and at the same time the security factor is decreased very considerably by the large number of tumbler changes required.

One of the primary objects of the present invention is to provide a lock in which these disadvantages are avoided, and wherein an emergency key, or other master key, for controlling the door,'is adapted to coperate with a lock ofV very simple form. It is also intended to provide a lock construction in which an emergency key adapted to open the door, under all circumstances, can cooperate with lock mechanism so constructed and arranged as to maintain the factor of security at the maximum. Theemergency key acts solely on its own special group of tumblers, whereby great security is obtained, and yet the improved lock is altogether devoid of complication, and may be inexpensively pro-Vv duced owing to the simplicity of its con struction.

Another obglect of the invention is toV pro vide a master key attachment vwhich is readily andv successfully applicable to vexisting locks. This' canl be donel irrespective of whether or not the locks as originally constructed are ofthe master keyed type. By our improvements, an additional key control can be provided, even without the necessity of lremoving such existing locks from the doors to which they are applied. v

7e also contemplate the provision of means associatedwith, and carriedby, the frame or casing of the door, and coperat- Ving with a lock on the door, for control-ling Patented Apr. `9, i918. Y

consists in the novel features and lcombinai .tions of parts tov be hereinafter described and claimed. Y

In thel accompanying drawings,

Figure 1 is a fragmentary outside elevation of a door and casing equipped with our improvements, y y

Fig. 2 is a section on the irregular section line 2--2 of Fig. l, showing the door locked,

Fig, 3 is a view similar to Fig. '2, with certain parts omitted, showing'the door released by the key for the emergency lock associa-ted with the frame or casing of the door,

Fig. 4 is a fragmentary view of the door casing, looking toward the face of the strike,

Fig. 5 is a fragmentary view, looking Vfrom the outside of the room, with the casing member omitted, showing how the emergency lock is mounted, y

Fig. 6 is a similar view with the cap plate of the emergency lock removed, the interior parts of said lock being shown in door-locking position, y

Fig. 7 is a View similar to Fig. 6,- showing the door-releasing, position,

Fig. `vS is a .fragmentary View at yright angles to Fig. 5, showing yhow the supporting bracket for the emergency lock is applied to the-*studding of Vthedoor frame,

Fig. y9 is a detail o-f the movable member of the strike, controlled by the auxiliary,.or emergency lock, and

Fig. l0 comprises views of the change key and emergency key respectively.

jln the particular embodimentof our invention which we have selected for illustration, the door is provided with an ordinary lock of the latch bolt type, having a fixed outer knob, and in Whichthe latch bolt is .15 adapted to be retracted from the outside by one or more keys of a suitable pin tumbler mechanism. The casing or frame of the door is provided with a strike plate having a part which maybe moved to release the latch bolt, by the actuation of an appropriate key called an emergency 'key that operates'an auxiliary or emergency lock associated with the door frame, and controlling the movable ypart of the strike. lt will thus be seen that when the door is locked, the possessor of the Vemergency key may readily open it by drawing back they movable strike member out of coperation with thelatch bolt, so as to gain access to the room in case ofemergency or B0 accident; and that when the movable part Vof the strike is again returned to its normal locking position, the lock on the door will act in the usual way i. AAall of the features spoken of above are not essential partsfof our in- .35 vention in all its-aspects, Ibutthey are mentioned to facilitate an understanding of the following description of the particular construction illustrated.

Referring to the drawings, A denotes the A() door,B therdloor frame or casing, C the lock on the door, D the stri-ke on theV casing, lll the auxiliary oremergency lock associated with the casing and F the movafblepart of the strike D, Vcontrolled by said auxiliary or 4 J'emergeney loc-k. rEhe lock C is illust ated as of the mortise type, but `this is unessential. l 'It has a latch bolt 2O adapted to be retracted by one or `more keys fitted to a pin tumbler cylinder lock 2l., located in the usual manner l. te on the o uter'face of the door. ln the particular form shown,"the lock C isprovided with vthe usual live'inside knob 22 for retractiug the bolt, and the knob 23 at the outside of the door 1s a fixed or dummy-knob, the re- .e traction of the bolt from the outside being confined te the cylinder lock mechanism; but obviously, the outer knob 23 might r be a l lateh-netractingknob adapted to be doggedi by the usual movable stop work.

you 'V'Loeatedina suitable notch 24 in the stud f2.5of the door'frame -is a Ufshaped bracket 26 seured'toY the stud bym'eans of screws 27a.

YThis fbracket26 forms a ,support or carrier `'forthe auxiliary lock whichjis fitted with- Y in the intermediate" partc't``t`li bracket, as

nasales? shown ink Figs. 5 and 8, and suitablysecured to the `bracket in such a Vposition vas vto lie wholly Within the notch or other cutaway part yin the stud. At 4its lower ....part, the

bracket is provided with an .extension 27 which may extend completely .across the notch in the stud, as shown in Figs. 2 and 3,

`-and which serves as a carrier for the movable memlber F of the strike. Preferably, theimember F is of the pivoted type, being pivoted or swiveled to the extension 27 by means of the pivot pin 28 at a point below the auxiliary lock E. yThe lock E is provided with a bolt 29, which carries adepending pin 30 extending out of the lock case, through a slot 31 inthe bottom thereof, and engaging an opening or socket 32 in the movable strike member. Thus said Amovable strike member,

vbeing pivoted'to the'bracket'at 28, and being "operatively connected with the bolt 29, will assume a locking position with respect to the latchbolt 20, when the-bolt 29 is `in the position shown in Fig. 6, and a releasing position in respect to said latch bolt when the bolt 29 is in the position shown in Fig. 7. In other words, thebolt 29 ofthe auxiliary lock is adapted to hold the member F in locking relation to the latch bolt, but when said bolt 29 is moved back by its key termed the emergency key, the movable strike rmember F willbe withdrawn from the lock- .ingposition shown in Fig. 2 to the unlocking positionshown inFig. 3, so that the `door may be opened YfromY the outside merely :by .pushing on the same.

The auxiliary lock E, as previously statethis located .vitliin the notch in the stud, so that when the covering or casing members of the door fralne are applied, it will kbe securely housed in the interior of the casing. ln some cases, however, the

.emergency lock might be applied to the exterior ofthe casing. The outer casing member is shown at 3st, the inner casing member at 35. and the intermediate casing member able member F, and said strike plate is niortised 'in the member 3G in the customary way. The movable strike member F may be advantageously' of thel form shown in F 9, having ajflat shank 38 adapted tolle, and

be guided, Von the plate 27,k andhaving an "upwardly extending lip or catch port1on39 to contact with the latch. Between 'hejlip catch portion andAV the "pivotcd extremity .around the keyhole.

of the strike member is a flat part 40, adapt ed to be positioned back of the opening in the fixed part of the strike, as shown jin Fig. 2.

A keyhole 4l for the auxiliary lock E passes through the outside casing member 34, and preferably a small escutcheon 42 will be applied to said casing member YVhen the` emergency key 83 is introduced into the lock E, and turned in the proper direction, it releases a plurality of tumblers 43 from engagement with the stump or fence 44 on the bolt 29, and retracts said bolt, thereby withdrawing the movable part of the strike. The lbolt 29 is normally held in its forward position, corresponding to the locking position of the strike member F, by means of a spring 45. As the bolt 29 is retracted, the stump or fence 44 passes into notches 46 of the tumbler gatings, and immediately upon the release of the key 33'the bolt 29 will spring forward to its initial position, thereby re-l turning the member Fl to the opera-tive or locking position. The'emergency key 33 is preferably of the drill pin type, as shown,

Y and the key bit is prevented from making a.

full rotation in the keyhole by abutting a shoulder 47 lon the bolt, so thatv the key cannotbeturned to a position in which the bolt 29 is 'jammed back in position to release the movable strike member. In other` words, the movable strike member cannot be held back without holding on to the key `controlling the same;

In Fig. 10, we have shown a key 48 adapt? ed to the cylinder lock 21, and intended for use as a change key or guest key. This particular key is, of course, of an Vabsolutely diii'erent type from the emergency key 33, butin accordance with the broad principles of our invention, the difference of type is not important so long as each key retains its own particular function.v We have not Shown an additional key or keys for the lock on the door, such for example, as a maids master key, but such additional key or keys may obviously be provided if desired.

The operation of the improved lock mechanism above described will be obvious for the most part from the foregoing description. Under normal conditions, the strike acts in the customary manner, that is to say,

exactly like an ordinary strike, the lip ofV the movable member F being held and deadlocked in position to catch the head of the latch bolt. Obviously, lthe movable strike member cannot be shifted out of cooperation with the latch bolt when the bolt member 29 ofthe emergency lock E is deadlocked (by means of the fence 44 and tumblers 43) in the advanced position shown in Fig. 6. Supposing, now, that the door of the hotel room is locked, with the guest inside, and

the proprietor needs to gain access to the and other keys, inoperative on the latch bolt ,from the outside. By simply inserting the emergency key in the keyhole in the casing, and giving it a slight turn, the strike is rendered inoperative to hold the latch bolt, and the door can be opened at once by merely pushing on the same. On releasing the hold on the emergency key, the spring 45, acting on the bolt V29, will immediately carry the strike member F back to its initial position, so that when the door is' again closed,vthe latchV bolt will-take into the strike in 'the usual manner, thus locking the door again.

, It will be understood that by our invention, both the lock on the door and the lock in or on. the casing, or door frame, can be made in the simplest form. Thus,in most cases, the two locks can be produced at a vcost not appreciably -greater than the cost of a single look providing all their combined functions. The securityV factor is 'very largely increased by our system, becausethe emergency key has its own group of tumblers to which it can be specially adapted, in order Vto avoid all liability of picking the emergency lock, and because the sim pli city' of the lock on the door and the relatively small number of keys adapted to said lock, tend to security and safety. 'Complicationsin the working of the look mechanism are also avoided, owing to the'simplicity of the construction. Furthermore, it' is much easier to differentiate between the keys, so that no key will operate a lock which it is not intended to operate. The application of the emergency lock to the 'casing or frame of the door can'be very readily ei'ected in the manner previously described, and the emergency lock can be applied to Vdoors kalready in use, by removing the casing members of the door frame, and mounting the lock in the studding, with the movable strike member in proper relation to the'bolt on the ldoor,.after which the casing members can be replaced. By this means,l an ordinary lock which is not of the master-keyed type can bevery readily converted into a master keyed lock. Again, even in the case of locks aware. No matter how great the number of controls, the security of the' Vlodk mechanism Y is vobviously verymuch greater than in the case of the ordinary master keyed lock, and

`catch member, inasmuch as `the means for operating the bolt on the door, by means of: the auxiliary, or emergency lock, may be considerably varied. Neither `do we limit ourselves to a lock mechanism in which a movable strike member automatically returns into cooperativeposition with ,respect vto :the door bolt, whenthe einnergencyV key is released. Again,f we do not intend to .limit ourselves to a mechanism in which the control .1o-f y.the door, gained by providing the auxiliary, or emergency' lock, is limited to ytheffunction `of opening the door by means of a so-called emergency key. Moreover, the lock on the door .need not be operableby a .key insome cases. i Various changes in these and other respects may be adopted within the scopeof our invention as defined inthe claims. Y

What we kclaiinfis:v

1. The combination `with a door and doo-r frame, of a bolt-on thedoor, a catch member for said bolt mounted Von the door frame,

.and a key to move said catch .member into I a positionto release the doorgsubstantially vas described.

2. y,The combination witha door anddoor -iframe, of .a rbolt on the door, a catch member for the bolt mounted lon the door frame,

a key-for mov-ingsaidcatclr member into a V*position 'to .release the bolt, and means for returning said catch member to its normal position; substantially as described.

i 3. The combination' with a door and door vranieoi' a ybolt on the door, a Vbolt on the door frame, a key for actuating said lastnamed bolt, and a door-.releasing member movable with said second bolt todoorreleasing position; substantially as described.

4. The combination withadoor and door iframe, ofa bolt' on the door, a vbolt on the doortrame, a movable doorreleasingmenin '-berg-adaptedfto be shifted to door-releasing position by said second bolt, and means for returning said -inember and4 saidsecond bolt to their initial positions; substantially as described.

5. VThecombination with a door anddoor iframe, 'of a bolt on `the door, a vpivoted :keeperfmeinberon the doorfframe to coperfate twith said-bolt, abolton the door .frame for movingsaid,keepermember to an inoperative position, and a key for actuating said second bolt and said keepermember; substantially as described.

6. The combination with a door and door frame, said doo-r frame having a hollow portion therein, of a lock mechanism ont-he door, a change key for operating said lock mechanism in order to release the door from the door frame, an emergency key insertible into said hollow portion of the door frame, and means in said hollow portion of the door frame, cooperating with said emergency key and with the lock on the door; substantially as described.

7. The' combination with a door frame having a stud with a notch therein, of a lock mounted in said notch, casing members inclosing said lock, means for actuating said lock, and a door-controlling member operative by saidlock; substantially as described.

S. The combination with a door and door frame, or" a bolt on the door, a movable member mounted on the door -rame to release the door from the frame, and a key to move said member in either of two directions; substantially as described.

9. rlhe combination with a door and door frame, of a bolt on the door adapted'to lock the door to the frame, a movable cloor-releas ing' member mounted on the Jrame, a sliding member onthe frame for moving saiddoorreleasing member in either of two directions, and a key for actuating said sliding member; substantially as described.

l0. The combination with a door and door frame, of a lock on the door having a bolt, a strike on the door frame having a movable part to cooperate with said bolt, an auxiliary lock connected with said movable strike member to operate the same, and a key 4i'or actuating said auxiliary lock; substantially as described.

11. The combination with a door and door frame, of a lock on the door for locking the latter to the frame, a key for operating said lock from the outside of the door,means for preventing operation of said lock by said key, a secondfkey, and means on the door .frame operable by said second key for releasing the door from the frame when said l'preventing means is in operative condition;

substantially as described.

l2. The combination with a door and door frame,ofa latch on the door, a key for withdrawing said latch Jfrom theoutside of the door, means for preventing the retraction of said latch by said key, a second key, and means on the door frame operable by said second key for releasing the door from the frame when said preventing means is in operative condition; substantiallyras described.

13. The combination with al door and door frame, of a latch on the door for-lockingthe y latter to the frame, a key Vfor retractingsaid latch from the outside of the door, means operable from the inside of the door f or preventing retraction of said latch by said key,

a second key, and means housed in the doorV frame vand operable by said Second key for releasing the door from the frame irrespective of the condition of saidv preventing means; substantially as described.

14. The combination vwith a door and door frame, of a lock on the door for locking the latter to the frame, a movable keeper member on the frame coperating with said lock, a change key for unlocking said lock from the outside of the door, means operable from the inside of the door for preventing the un, locking of said lock by means of said change key, an emergency key, and means operable by said emergency key for shifting said keeper member to door-releasing position; substantially as described. l

15. The combination with a door and door Jframe, of a lock on the door having a latch bolt, a strike on the door frame having a 4movable keeper member to cooperate With said latch bolt, a changey key for retracting said latch bolt from the outside of the door, means for preventing the retraction of said latch bolt by means of said change key, an emergency key, a tumbler-controlled member on the door frame movable by said emergency key, and means of connection between said tumbler-controlled member and said movable keeper member; substantially as described.

16. rlhe combination with a door and door frame, of a bolt on the door frame, a key for operatinw said bolt, and a door-locking member moviible into and out of operative position by said bolt; substantially as described.

17. The combination with a door and door frame, of a bolt on the door frame, a plurality of tumblers for said bolt, a key for said bolt, and a door-locking member` operatively connected With said bolt so that the former is moved into and out of operative position by the latter; substantially as described. p

18. An emergency attachment for locks adapted for application to a door frame, comprising a movable strike member, a lock connected With said strike member, to move the same, and having one or more tumblers, and a key for said lock; substantially as described.

19. The combination With a door and door frame of a bolt on the door, a key for actuating said bolt, a movable strike member on the frame for cooperating With said bolt, a. lock for actuating said movable strike member having one or more tumblers, and a second key different from the iirst, for operating said lock from the door frame; substantially as described.

Q0. The combination With a door having a locking bolt, of a doorframe having a notch therein, a lock mountedinv said notch, casing members inclosing said lock, a key insertible -into the casing to actuate'said lock, and a door controlling member operativeby said lock and coperating With said locking bolt; substantially asdescribed.

y21. The combination With Ya door having a locking bolt, of a ydoor frame having a notch cut therein adjacent the door, a lock mounted inv said notch and comprising a bolt and one or more tumblers, casing. members applied to the' frame andinclosing said lock, a key insertible through one of said casing members to actuate theboltof the lock in said notch, and a --door controllingmember actuated -Aby said. last named bolt, and cooperating Withlthe bolt on the door; substantially as described.

22.- rhe combination with a door and door frame, of a latch bolt on the door tor loclc ing the door 4to the frame, a movable catch member on the frame coperating With said bolt, a lock for moving said catch member out of coperation with said bolt, a key for said lock, and means for returning said catch member into coperation with said bolt, When the key is released; substantially as described. l v v i y 23. An emergency attachment Jfor locks, comprising a strike, a movable member cooperating with said strike, and a key bolt for actuating said movable member; substantially as described.

24C. An emergency attachment for locks, comprising a strike, a movable door-releasing member coperating With said strike, and a key bolt operatively connected With said member to actuate the same; substantially as described.

25. An emergency attachment for locks, comprising a strike, a movable door controlling member coperating With said "strike, a bolt for operating said member connected therewith, tumblers for said bolt, a case for ioc said bolt and tumblers, means lfor mounting y all of said parts on a door frame, and a key forsaid bolt; substantially as described.

26. The combination With a door and door frame, of a bolt onl the door frame, a key for operating said bolt, and a movable door- Vlatter to the Jrame, a change key for Operating said lock from the outside of the door, means operable from the inside of the door for preventing the retraction of the bolt of operable: by. said emergency. key. for. releasA- ingithe doof-fromtheframe: when said prevventing: means: isin. operative condition;

substantially. as f described;-

29. lira lock structurefor. doors,y a catch memberfor the loek bolt; mounted. on the.

door frame7-v andyieldingly heldin the doom' locking position',` and Y. a f key :for moving; said? catch'l member linto door-releasing. position; substantially! as described;

30. Inailock structrueor. doors, a-catch member for the loekbolt, mounted'. on. the door.' frame, @spring-norrnally holding said catch member` in door-lockingposition., andv key actuated mechanismi for. movingJv saidy catch member into.door-releasing position in opposition-.to-said spring; substantially 1s-described.

31. In aloC-kstructue'for doors,y a catch member Yfor thegloekbolt3,nio111ited on thekv In aloekig a key. oroperatng theloek ronai the outside. of` the' door operating in a= keyhole. in the fdoor; and a second key; operating in. akeyhole onthe door frame.

when the first key isxrender'ed. inoperative from the inside ofthe-room for releasing. the..do0r from the frame.; substantially as described?.

l-nlwitn'ess whereof` We have hereunto` set our hands` on the 12th day of December]- 1914;.

HENRY G. VOIGHT. GEGRGE B. PICKUP.

Vitnesses l:

R. R. CAMPBEIIQL,v 'Ra C. SARGENT. 

